Electric switch.



G. BREED.

ELECTRIC SWITCH. APPLICATION FILED MAR. I5, 1912.

1,164,984. 11116111911 Dec.21,1915

Ml i george Emea? UNiTnD srATEs earner clerics.

, GEORGE BREED, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO 4LYRCHORT)COMPANY, 0F NEW YORK, N. Y., A CORPORATION OF NEW YORK.

ELECTRIC SWITCH.

Specication of Letters Patent.

Application filed March-15, 1912. Serial No. 683,944.

,ing the desired electrical separat-ion and 1nechanical connection ofsuchv blades. My unproved means, 1n their preterred form, comprise thecombination with the switch blades of a pliable or yielding insulating'material (such as blotting paper) for insulating them, and a device suchas a metal band, clip or keeper tor clamping the blades and insulatingmaterial together in firm relation.`

The characteristic 'features ot' myV improvements are fully disclosed inthe follow- ,ing description and the accompanying drawings inillustration thereof In the drawiiigs, Figure 'lis a perspective View ofa switch embodying-my improvements; Fig. 2. is an enlarged transversesectional view o' the same; Fig. 3 is an enlarged longitudinal sectionalview thereof; Fig. 4t is a top plan view of a modilied form of switchembodyingl my improvements; and Fig. 5 is a longitudinal sectional viewot' the ,construction shown in Fig. 4. i

Asillustrated in Figs. 1, 2, and 3, the switch comprises the angularmetal base 1;' the resilientmetal strips 2, 3, and 4:; the layers ofpliable material 5, 6, and 7 alternating' with the blades, which areinsulated thereby, and theniietal band or keeper 8 which is tightlydrawn around the blades and insu lating layers to a connection withthebase, suitably made by soldering the ends S thereto, the several partsbeing thereby irmly fixed together. The pliable insulating` strips are,as shown, of `greater width than the blades, which areembeddial thereinand normally separated thereby,the blades being engaged in succession bypressure applied to the blade 4.

As shown in Figs. et and 5, the switch comprises the metal base 10having the hook 10 with the insulation 11 connected thereto by the. clipl2, in combination with the resilient blades 13 l1, l5, 16, 17, 1S, and19, which are insulated by the pliable layers 20, Q1, 2Q, 2l, 25, 2G,and 2T. A band or keeper 28 is drawn tightly and secured around thePatented Dec.`21v,1915. i

blades and insulation so as to bind them togethei.' and embed the bladesin the pliable layers. The blades are adapted to be electricallyconnected in succession, in the reverse order of the numerals appliedthereto, b y the application ot' pressure to the blade 1S), the latterand the blades 17 and 18 being normally held by their resiliency inengagement with the insulation 11. v

While the blotting paper specified has been found an entirelysatisfactory insulatinge,r material odi thejoliable character described,other n'iaterials vmay be used, s'uch as asbestos, soft rubber, softskins and Various woven fabrics. Such insulatingmaterials may beprotected from the absorption ot' moisture by saturating them with oil,it' circumstances shall render this desirable.A or when such materialhas been conibined in the switch it may be coated with shellac or othersuitable substance adapted for protecting it.

Having` described my invention, I claim 1. A- switch comprising aplurality of blades, compressible insulating; material alternating' withsaid blades', said blades being embedded in and insulated by saidmaterial,

and means for binding said blades and ina- ;terial together.

n il'

